Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Patent
1996-07-09
1998-10-20
Oen, William L.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
342352, 342463, 3644491, G01S 502, H04B 7185
Patent
active
058253262
ABSTRACT:
A GPS system and method for real-time determination of integer ambiguities in a global positioning system (GPS) receiver and, more specifically, to a GPS system and method for determining integer ambiguities of a GPS solution using a Kalman filter with double difference integer ambiguities as additional states to estimate the ambiguities until they are estimated to within a sufficiently tight variance around their error estimates. Thereafter, all the candidate integer ambiguity values are searched in the range domain, e.g., along the double difference lines-of-sight for each satellite, until one is selected; if the after-the-fit residuals for the selected integers are below a certain threshold, then the selected integers are accepted as the integer ambiguities. If not, another set of candidate integer values are selected and analyzed.
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Semler James Russell
Thorndyke, Jr. Earl Clare
Interstate Electronics Corporation
Moorhead, Esq. Sean T.
Oen William L.
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